<template>
  <div class="login-container">
    <el-collapse-transition>
      <el-form v-if="switchLogin" ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">
        <div class="title-container">
          <h3 class="title">网上银行-登录</h3>
        </div>
        <el-form-item prop="username">
          <span class="svg-container">
            <svg-icon icon-class="user" />
          </span>
          <el-input
            ref="username"
            v-model="loginForm.username"
            placeholder="用户名"
            name="username"
            type="text"
            tabindex="1"
            auto-complete="on"
          />
        </el-form-item>
        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :key="passwordType"
            ref="password"
            v-model="loginForm.password"
            :type="passwordType"
            placeholder="密码"
            name="password"
            tabindex="2"
            auto-complete="on"
            @keyup.enter.native="handleLogin"
          />
          <span class="show-pwd" @click="showPwd">
            <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
          </span>
        </el-form-item>

        <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:30px;" @click.native.prevent="handleLogin">登录</el-button>
        <div class="tips" style="text-align: right;">
          <span style="margin-right:20px;">忘记密码？</span>
          <el-button type="info" size="mini" @click="switchLogin=!switchLogin">注册<i class="el-icon-arrow-down el-icon--right" /></el-button>
        </div>
      </el-form>
    </el-collapse-transition>

    <el-collapse-transition>
      <el-form v-if="!switchLogin" ref="registerForm" :model="registerForm" :rules="registerRules" class="login-form" auto-complete="on" label-position="left">
        <div class="title-container">
          <h3 class="title">网上银行-注册</h3>
        </div>
        <el-form-item prop="username">
          <span class="svg-container">
            <svg-icon icon-class="user" />
          </span>
          <el-input
            ref="username"
            v-model="registerForm.username"
            placeholder="用户名"
            name="username"
            type="text"
            tabindex="1"
            auto-complete="on"
          />
        </el-form-item>
        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :key="passwordType"
            ref="password"
            v-model="registerForm.password"
            :type="passwordType"
            placeholder="密码"
            name="password"
            tabindex="2"
            auto-complete="on"
            @keyup.enter.native="handleLogin"
          />
          <span class="show-pwd" @click="showPwd">
            <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
          </span>
        </el-form-item>
        <el-form-item prop="age">
          <span class="svg-container">
            <svg-icon icon-class="age" />
          </span>
          <el-input
            ref="age"
            v-model.number="registerForm.age"
            placeholder="年龄"
            name="age"
            type="text"
            tabindex="3"
            auto-complete="on"
          />
        </el-form-item>
        <el-form-item prop="gender">
          <span class="svg-container">
            <svg-icon icon-class="sex" />
          </span>
          <el-input placeholder="性别" style="width: 25%" readonly />
          <el-radio v-model="registerForm.gender" label="1" style="width: 30%" tabindex="4">男</el-radio>
          <el-radio v-model="registerForm.gender" label="0" style="width: 30%">女</el-radio>
        </el-form-item>
        <el-form-item prop="email">
          <span class="svg-container">
            <svg-icon icon-class="email" />
          </span>
          <el-input
            ref="email"
            v-model="registerForm.email"
            placeholder="邮箱"
            name="email"
            type="text"
            tabindex="5"
            auto-complete="on"
          />
        </el-form-item>

        <el-button style="width: 30%;margin-right: 25%" icon="el-icon-arrow-up" plain @click="switchLogin=!switchLogin">返回登录</el-button>
        <el-button :loading="loading" type="warning" style="width:40%;margin-bottom:30px;" @click.native.prevent="handleRegister">注册</el-button>
      </el-form>
    </el-collapse-transition>
  </div>
</template>

<script>
import { validUsername } from '@/utils/validate'
import { register } from '@/api/user'

export default {
  name: 'Login',
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!validUsername(value)) {
        callback(new Error('请正确输入用户名！'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      const re = /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)[^]{8,16}$/

      if (!re.test(value)) {
        callback(new Error('密码至少包含大小写字母和数字，且不少于8位'))
      } else {
        callback()
      }
    }
    const validateAge = (rule, value, callback) => {
      if (value < 1 || value > 100) {
        callback(new Error('年龄必须在1-100之间!'))
      } else {
        callback()
      }
    }
    return {
      switchLogin: true,
      loginForm: {
        username: '张三',
        password: 'Admin123'
      },
      registerForm: {
        username: '',
        password: '',
        age: '',
        gender: '1',
        email: ''
      },
      loginRules: {
        username: [{ required: true, trigger: 'blur', validator: validateUsername }],
        password: [{ required: true, trigger: 'blur', validator: validatePassword }]
      },
      registerRules: {
        username: [{ required: true, message: '请输入姓名', trigger: 'blur' },
          { min: 2, max: 5, message: '长度在 2 到 5 个字符', trigger: 'blur' }],
        password: [{ required: true, validator: validatePassword, trigger: 'blur' }],
        age: [{ required: true, message: '请输入年龄', trigger: 'blur' },
          { type: 'number', message: '年龄必须为数字值', trigger: 'blur' },
          { required: true, validator: validateAge, trigger: 'blur' }],
        gender: [{ required: true, message: '请选择性别', trigger: 'change' }],
        email: [{ required: true, message: '请输入邮箱地址', trigger: 'blur' },
          { type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur', 'change'] }]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.$store.dispatch('user/login', this.loginForm).then(() => {
            this.$router.push({ path: this.redirect || '/' })
            this.loading = false
          }).catch(() => {
            this.loading = false
          })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    handleRegister() {
      this.$refs.registerForm.validate(valid => {
        if (valid) {
          this.loading = true

          console.log(this.registerForm)

          register(this.registerForm).then(() => {
            this.$message({
              message: '注册成功，即将返回登录页面！',
              type: 'success',
              duration: 2000
            })
            this.loginForm.username = this.registerForm.username
            this.loginForm.password = this.registerForm.password
            setTimeout(() => {
              this.switchLogin = true
            }, 1500)
            this.$refs['registerForm'].resetFields()
          }).finally(() => {
            this.loading = false
          })
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg:#283443;
$light_gray:#fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0;
      -webkit-appearance: none;
      border-radius: 0;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }
  //:not(#gender)
  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}

</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0 auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
